A 34-year-old man was seriously injured after an attack in the early hours of Monday morning in the German city of Cologne.
Turkey must not be permitted to blackmail the EU in talks about visa-free travel for Turkish citizens across the continent, German Vice-Chancellor Sigmar Gabriel has said.
A Syrian man has killed himself and injured 12 others after detonating a backpack bomb near a music festival in the south German city of Ansbach.
One woman has been left dead and two other people injured after a machete attack by a Syrian asylum seeker in Reutlingen, near Stuttgart.
Ten people have died after a gunman opened fire outside a shopping centre in the German city of Munich.